Antimicrobial resistance profile of Staphylococcus aureus isolated in goat milk.

Abstract: The present work aimed to study the antimicrobial resistance profile of Staphylococcus aureus isolated from goal milk. Two hundred and twelve samples of goat milk were used for the microbiological analyses. In ten (4.7%) of these samples, strains of Staphylococcus aureus were isolated. The susceptibility of the strains of S. aureus was assayed by the disc diffusion method. The antibiotics tested were: Ampicillin-10?g (AMP), Chloramphenicol-30?g (CHL), Tetracycline-30?g (TET), Gentamicin-10?g (GEN), Trimethoprim-Sulfamethoxazole-25?g (SXT), Erythromycin-30?g (ERY), Cefoxitin-30?g (CFO), Ciprofloxacin-05?g (CIP), Penicillin-10? (PEN)), Clindamycin-02?g (CLI), Azithromycin-15?g (AZM), Rifampicin-05?g (RIF) and Linezolid 30?g (LZD). The resistance of some strains to the antibiotics tested becomes a concern, because of the difficulty in treating the animal, but also because of a loss of product quality and by virtue of the possibility of contamination in human consumption, which can occur, including, during periods of treatment, when the milk should not be used.